To be understood as the Shore hardness is the resistance exercised by the test material to a body of defined shape being pressed into it under a defined spring pressure (DIN 53505), Shore A for soft rubber, Shore D for Ebonite/hard rubber
A measure of the hardness of a material obtained by measuring the size of an indentation made in the surface under a known load. Other indentation methods such as Knoop, Rockwell and Vickers are also used. It is exceedingly difficult to convert hardness values obtained by one method to another.
A method of determining the hardness of a compressible material. Applies to photopolymer plates and non metal rollers on the printing press.
Resistance of a (polymer) surface to deformation. The different hardness measures applied for characterising polymers are: (a) Shore hardness (two scales, A for softer and D for harder materials) (b) Ball indentation hardness (also useable on profiled surfaces because of bigger measuring device).
a hardness measure determined by a Shore durometer. See duro.
An instrument measure of the surface hardness of an insulating or jacket materials.
For sealants, the 'A' scale is usually used, whereby a hardened steel pin (which is connected to a calibrated spring meter) is pressed into the sealant and its depth of penetration is measured. Shore hardness is a strong indicator of modulus. Low modulus sealants have shore hardnesses of 20 or less. Medium modulus sealants have values from 21 to 50, while high modulus materials have shore hardnesses above 50. (See " Modulus")
Measurement of surface hardness of material.
A measure of the resistance of a material to indentation by a spring-loaded indenter. The degree of rebound by the indenter is measured on a graduated scale. The harder the material, the greater the rebound of the indenter and the higher the numerical value.
A common method of determining the hardness of a plastic material as developed by the Shore Instrument Company. The device used, called a durometer, consists of a small conical hammer fitted with a diamond point and acting in a glass tube. The hammer is made to strike the material under test and the degree of rebound is noted on a graduated scale. Generally, the harder the material, the greater the rebound.
The scale by which a polyurethane screen module or component is measured for hardness, typically expressed as "shore A". As the hardness is increased, abrasion resistance tends to increase while impact resistance decreases proportionately. As the hardness is decreased, abrasion resistance tends to decrease while impact resistance increases proportionately.
Measure of firmness of a compound by means of a Durometer.
A method of determining the hardness of a material using a pointed gauge. Shore A is used to measure soft materials and Shore D is used to measure harder materials.
A unit of measuring the hardness of the material used to make silicone transfer pads and squeegees.
A measure of the resistance of material to indentation by a spring-loaded indenter. The higher the number, the greater the resistance. Normally used for rubber materials.
The reading of a material's hardness on a durometer similar to the Shore A durometer. The scale of 0-100 is used on rigid and semi-rigid materials. Consists of a pin point depression into the material. Both the Shore A and Shore D instruments are made by the Shore Instrument Manufacturing Company, Inc., Jamaica, NY.